The carrier rate is not your real cost per order.
The sticker shipping rate is the visible tip of the iceberg. Labor, materials, your own time, storage, software, and the orders that go wrong are the rest of it. Plug in your numbers below to see what shipping an order yourself actually costs, all in.
Directional model. Plug in your real numbers. This is cost, not profit.
What goes into a real cost per order
No black box. The carrier rate is the number everyone quotes, but it is only one of five layers. Here is exactly what the calculator adds up, the same way we cost out fulfillment on our own brands.
1. The five hidden layers
Shipping is the carrier rate you pay. Materials are the box, mailer, tape, and inserts. Labor is the human time to pick, pack, and label. Fixed per order is your storage and software spread across the month's volume, so it gets cheaper as you ship more and more expensive when you are slow. Rework is the cost of the orders that come back or go out wrong. Quote only the first line and you are off by a wide margin.
2. Your time is the line nobody bills
Every order takes real minutes to pick, pack, and label, and those minutes have a price even when no one cuts a paycheck for them. If the founder is the one packing, use what an hour of your time is actually worth, not minimum wage. Your hour spent at the packing table is an hour not spent on product, marketing, or growth, and that is the most expensive labor in the building.
3. The orders that go wrong
A return or a mis-ship roughly doubles the cost on that order, because you pay to ship and handle it once, then pay to reship and re-handle it again. At a 3% error rate the hit looks small per order, but spread across thousands of orders a month it is real money, and it scales right alongside your volume. The brands that ignore it are quietly carrying it.
Why most founders get this wrong
It is not a content problem, it is a math problem nobody runs. The carrier rate is easy to see on the invoice, so it becomes the number, while labor, your own time, storage, software, and rework stay invisible until you total them. The brands that get it right are usually the ones that stopped doing everything by hand long enough to look at the full number.